Gary Dale Ellis

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Dallas, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
System and method for monitoring packer slippage
- Patent number 6,924,745
- Issue date Aug 2, 2005
- Halliburton Energy Services, Inc.
- Roger L. Schultz
- E21 - EARTH DRILLING MINING
Information Patent Grant
Isolation valve with frangible flapper element
- Patent number 4,691,775
- Issue date Sep 8, 1987
- Dresser Industries, Inc.
- Lee M. Lustig
- E21 - EARTH DRILLING MINING
Information Patent Grant
Blowout preventer
- Patent number 4,372,527
- Issue date Feb 8, 1983
- Dresser Industries, Inc.
- Irwin Rosenhauch
- E21 - EARTH DRILLING MINING
Information Patent Grant
Subsurface tubing hanger and stinger assembly
- Patent number 4,363,358
- Issue date Dec 14, 1982
- Dresser Industries, Inc.
- Gary D. Ellis
- E21 - EARTH DRILLING MINING
Information Patent Grant
Subsurface tubing hanger and stinger assembly
- Patent number 4,305,465
- Issue date Dec 15, 1981
- Dresser Industries, Inc.
- Gary D. Ellis
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method for selectively retrieving a plurality of well packers
- Patent number 3,951,211
- Issue date Apr 20, 1976
- Dresser Industries, Inc.
- Gary Dale Ellis
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
System and method for monitoring packer slippage
- Publication number 20030231117
- Publication date Dec 18, 2003
- Roger L. Schultz
- E21 - EARTH DRILLING MINING